Elementary algebra is the most basic form of algebra. 1  It is taught to students who are presumed to have no knowledge of mathematics beyond the basic principles of arithmetic. In arithmetic, only numbers and their arithmetical operations (such as +, â, Ã, Ã·) occur.
When using vinyl masking as a stencil, allow the etching cream to remain on the glass for 5 minutes.After 5 minutes, use water to rinse off the etching cream. Rinse from the top of the project down, work quickly and use your brush to help.
Etching. Etching is the process of using strong acid or mordant to cut into the unprotected parts of a metal surface to create a design in intaglio in the metal. As an intaglio method of printmaking, it is, along with engraving, the most important technique for old master prints, and remains in wide use today.rinceton's WordNet (1.00 / 1 vote) Rate this definition: etching (noun). an impression made from an etched plate. etching (noun). an etched plate made with the use of acid. engraving, etching (noun). making engraved or etched plates and printing designs from them.